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August 2011 Traffic Volume Trends

  • Travel on all roads and streets changed by -1.7% (–4.6 billion vehicle miles) for August 2011 as compared with August 2010.
  • Travel for the month is estimated to be 263.0 billion vehicle miles.
  • Cumulative Travel for 2011 changed by -1.3% (–26.0 billion vehicle miles).
  • Cumulative estimate for the year is 1,978.4 billion vehicle miles of travel.

Click here for lists of state by region

  • Estimated Vehicle-Miles of Travel by Region - August 2011 - (in Billions)
  • Change in Traffic as compared to same month last year.
Region Total Travel Percentage Change
North-East 39.3 -2.2
South-Atlantic 55.3 -2.1
North-Central 60.2 -1.7
South-Gulf 50.0 -1.7
West 58.2 -1.2


  • All data for this month are preliminary. Revised values for the previous month are shown in Tables 1 and 2.
  • All vehicle-miles of travel computed with 2009 Table VM-2 as a base.
  • Compiled with data on hand as of October 07, 2011.
  • Some historical data were revised based on HPMS and amended TVT data as of December 2009
  • For information on total licensed drivers in the U.S. visit Select the year of interest then Section III (Driver Licensing).
  • For information on total registered motor vehicles in the U.S., visit Select the year of interest and Section II (Motor Vehicles).
  1. Travel Trends (August 2011)
  2. Individual Monthly Motor Vehicle Travel in the U.S. for August 2011
  3. Changes on Rural Arterial Roads by Region and State
  4. Changes on Urban Arterial Roads by Region and State
  5. Changes on All Estimated Roads by Region and State
  6. Volume Trends – Rural
  7. Volume Trends – Urban
  8. Figure 1 – Moving 12-Month Total on All Highways
  9. Figure 2 – Travel on U.S. Highways By Month


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